Many Indian investors face a familiar problem when they have surplus money for a few months: they want better return potential than leaving the money idle in a savings account, but they do not want to take the volatility associated with a regular equity mutual fund. Arbitrage mutual funds are often considered in this situation because their return-generation strategy is quite different from simply buying shares and hoping their prices rise.
Instead of taking a large directional bet on the stock market, an arbitrage fund attempts to profit from temporary price differences for the same or related securities in different market segments, particularly the cash and futures markets. The fund typically buys a share in the cash market while simultaneously selling its futures contract at a higher price. The difference between the two prices, after costs and other factors, contributes to the fund’s return.
This market-neutral approach can keep volatility relatively low compared with conventional equity funds. However, “low risk” does not mean “no risk,” and arbitrage funds cannot guarantee consistent positive returns. Understanding how the strategy actually works is essential before investing.
What Is an Arbitrage Mutual Fund?
An arbitrage mutual fund is a mutual fund that primarily seeks to exploit price differences between the cash and derivatives markets.
Suppose a company’s share is trading at ₹1,000 in the cash market, while its near-month futures contract is available at ₹1,008.
An arbitrage fund may:
- Buy the share in the cash market for ₹1,000.
- Sell the corresponding futures contract at ₹1,008.
- Hold both positions simultaneously.
- Close or settle the positions as the price difference converges.
The ₹8 difference represents the gross arbitrage spread before transaction costs, expenses and other factors.
The key point is that the fund is not simply predicting whether the company’s share price will rise or fall.
How Does Cash-Futures Arbitrage Work?
To understand arbitrage funds, you need to understand one basic characteristic of futures.
A stock can have one price in the cash market and a slightly different price in the futures market. Futures frequently trade at a premium to the cash price because of factors such as financing costs, dividends, demand and the time remaining until expiry.
For example:
Cash-market price: ₹500
Futures-market price: ₹505
A fund identifies a ₹5 spread and simultaneously buys the stock and sells the futures contract.
Now imagine that near expiry both prices converge around ₹510.
The cash position has gained:
₹510 − ₹500 = ₹10
The futures short position has lost:
₹510 − ₹505 = ₹5
Net gross gain:
₹10 − ₹5 = ₹5
Alternatively, suppose both converge at ₹490.
The cash position loses ₹10, but the short futures position gains ₹15.
The gross difference is again ₹5.
This illustrates why the strategy can be relatively market-neutral. The objective is to capture the spread rather than predict the market’s direction.
Why Do Cash and Futures Prices Eventually Converge?
Futures contracts have expiry dates.
As expiry approaches, the difference between the futures price and the underlying cash-market price generally narrows. At expiry, the relationship between the two creates the convergence that makes cash-futures arbitrage possible.
This convergence is central to an arbitrage strategy.
Fund managers continuously search for opportunities where the available spread is sufficiently attractive after considering:
- Transaction costs
- Securities transaction costs where applicable
- Market liquidity
- Fund expenses
- Financing conditions
- Expected dividends
- Time until expiry
A price difference alone is not enough. It needs to offer a worthwhile net opportunity.
Why Are Arbitrage Funds Considered Relatively Low Risk?
Traditional equity funds generally make money when the value of their stock portfolio rises. If the market falls sharply, their NAV can also decline significantly.
Arbitrage funds attempt to reduce this directional exposure by taking offsetting positions.
If the fund buys a stock and simultaneously sells its corresponding futures contract, much of the direct market movement is hedged.
This can result in:
- Lower volatility than typical equity funds
- Less dependence on whether the market rises or falls
- Relatively stable return patterns in normal market conditions
- Lower directional equity-market risk
But this does not make arbitrage funds risk-free.
Their NAV can fluctuate, and returns depend on the availability and size of arbitrage opportunities.
Where Does the Rest of the Money Go?
An arbitrage fund does not necessarily earn its entire return from arbitrage trades.
Depending on the scheme’s mandate and available opportunities, part of the portfolio can be invested in debt and money-market instruments.
These may include instruments such as:
- Treasury bills
- Certificates of deposit
- Commercial paper
- Short-term debt securities
- Money-market instruments
These investments can generate interest income and help the fund manage liquidity.
Therefore, the final return of an arbitrage fund can reflect both arbitrage opportunities and returns generated by the non-arbitrage portion of its portfolio.
Why Arbitrage Returns Change Over Time
It is important to understand that arbitrage funds do not produce a fixed interest rate.
Returns depend partly on the spreads available in the market.
When cash-futures spreads are attractive and numerous opportunities are available, funds may be able to lock in better potential returns.
When spreads become narrow, return potential can decline.
Factors influencing arbitrage opportunities include:
- Short-term interest rates
- Market liquidity
- Futures-market positioning
- Demand and supply
- Market volatility
- Institutional activity
- Cost of carrying positions
This is why comparing an arbitrage fund’s past return with a fixed deposit rate and assuming the same return will continue can be misleading.
Can Market Volatility Help Arbitrage Funds?
Volatility is normally viewed negatively by investors, but it can sometimes create additional pricing differences between cash and derivatives markets.
During periods of active trading, more arbitrage opportunities may emerge.
However, greater volatility does not automatically guarantee higher arbitrage-fund returns. Extreme market conditions can also create liquidity challenges, unusual pricing and operational complexities.
Fund managers therefore focus not only on finding spreads but also on executing and unwinding positions efficiently.
Are Arbitrage Funds Equity Mutual Funds?
For Indian mutual-fund classification and taxation purposes, arbitrage schemes are generally structured to maintain the equity exposure required to qualify as equity-oriented funds, even though much of that equity exposure is hedged through derivatives.
This creates an unusual situation.
From an investment-risk perspective, an arbitrage fund can behave more like a relatively conservative short-term product than a conventional diversified equity fund. But for tax purposes, qualifying schemes can receive equity-oriented mutual-fund treatment.
Investors should always check the latest scheme information and applicable tax rules before investing because regulations can change.
Taxation of Arbitrage Mutual Funds in India
Tax treatment is an important reason Indian investors consider arbitrage funds.
For qualifying equity-oriented mutual funds, the holding period determines whether gains are treated as short-term or long-term capital gains.
Under the current framework, units of an equity-oriented mutual fund generally become long-term capital assets when held for more than 12 months.
For investments subject to the prevailing equity capital-gains framework, investors should check the applicable short-term and long-term capital-gains rates, exemption thresholds and STT requirements for the relevant financial year before making a decision.
Taxation can change through Finance Acts and other amendments, so an arbitrage fund should not be selected solely because of historical tax advantages.
Arbitrage Fund vs Liquid Fund
Both may be considered for relatively short investment horizons, but they work very differently.
Arbitrage funds primarily attempt to earn from cash-futures price differences while maintaining hedged equity positions.
Liquid funds primarily invest in very short-duration debt and money-market securities.
The important differences include:
- Different portfolio structures
- Different sources of returns
- Different risks
- Different taxation
- Different exit-load structures across schemes
Therefore, arbitrage funds should not automatically be considered a replacement for liquid funds.
Arbitrage Fund vs Fixed Deposit
A bank fixed deposit and an arbitrage mutual fund are fundamentally different products.
A fixed deposit offers a predetermined interest rate, subject to the bank’s terms, whereas an arbitrage fund provides market-linked returns.
With an arbitrage fund:
- Returns are not guaranteed.
- NAV can fluctuate.
- There may be an exit load for early redemption.
- Returns depend on market spreads and portfolio income.
- Tax treatment differs from bank-deposit interest.
Investors seeking certainty of return should not treat an arbitrage fund as if it were a fixed deposit.
What Are the Risks of Arbitrage Mutual Funds?
The term “low risk” can sometimes lead investors to underestimate important limitations.
Arbitrage Opportunities May Shrink
If futures premiums become very small, funds may struggle to find attractive trades.
Short-Term NAV Fluctuation
Arbitrage funds can occasionally deliver negative returns over very short periods because of market movements, valuation changes and expenses.
Debt-Side Risk
The debt and money-market portion may introduce interest-rate or credit-related risks depending on the securities held.
Execution and Liquidity Risk
The fund must execute both sides of an arbitrage trade efficiently. Unusual market conditions can affect spreads and liquidity.
No Guaranteed Returns
Perhaps most importantly, an arbitrage fund is a mutual-fund investment, not a guaranteed-return product.
Who May Consider an Arbitrage Fund?
Arbitrage funds may be worth evaluating for investors who:
- Have surplus money they do not want to expose to substantial equity volatility.
- Understand that returns are market-linked.
- Can remain invested beyond very short periods.
- Want to explore an alternative to certain short-duration investment products.
- Understand the applicable taxation and exit load.
They are generally not appropriate for someone seeking high long-term equity growth or guaranteed capital and returns.
What to Check Before Investing
Do not select an arbitrage fund only because it delivered the highest return last year.
Check factors such as:
- Expense ratio
- Exit load and applicable holding period
- Portfolio quality
- Consistency across different market conditions
- Size and liquidity of the scheme
- Investment horizon
- Current taxation
- Your need for capital stability and liquidity
Also read the scheme’s latest documents before investing.
Why “Consistent” Does Not Mean Guaranteed
The biggest misconception surrounding arbitrage funds is that their historical stability means they cannot lose money.
Their relatively low volatility comes from the hedged structure of arbitrage trades, not from any guarantee by the mutual fund.
Returns can change as market spreads change. Short holding periods can also produce disappointing results, especially after expenses and exit loads.
For Indian investors, arbitrage funds are therefore best understood as a specialised market-linked product designed to capture pricing inefficiencies with relatively limited directional equity exposure—not as a guaranteed substitute for a savings account or fixed deposit.
FAQs
1. Can I lose money in an arbitrage mutual fund?
Yes. Arbitrage funds are market-linked and their NAV can decline, particularly over short periods. Hedging substantially reduces directional equity risk, but it does not eliminate market, liquidity, debt-portfolio or execution risks.
2. How long should I stay invested in an arbitrage fund?
There is no universal minimum period, but arbitrage funds are generally more suitable when investors can avoid extremely short holding periods. Check the scheme’s exit-load structure, prevailing spreads, tax implications and your liquidity requirement before investing.
3. Why doesn’t an arbitrage fund fall sharply when the stock market crashes?
Its equity positions are generally substantially hedged using derivatives. A fall in the value of a stock held in the cash market can therefore be offset to a significant extent by gains on the corresponding short futures position. The exact NAV movement still depends on the fund’s complete portfolio.
4. Is an arbitrage fund better than an FD for parking money?
Not automatically. An FD offers a predetermined interest rate, while an arbitrage fund offers market-linked returns with no guarantee. Taxation, investment period, liquidity, exit load and risk tolerance should all be considered before choosing between them.
